FROM THE MONTEBELLO ISLANDS. 89 
Pat. Metat. 
Coxe. Tr. &fem. & tib. & tars. 
ees ee 1 3 4 33 Ate er ieyoa 
2 3 32 34 Ayes wig 
3 3 22 21 OE ves BE 
4 3 31 31 52 = 131 
Railpr eNeee eee ra ey 1} lige 
Genus Prucetra Thor. 
PEUCETIA MARGARITATA, sp.n. (PI. II. fig. 11.) 
The cephalothorax is pale yellow mottled with white and brown 
upstanding bristles. The eye-space is black and dark yellow- 
brown, with white downlying flat lanceolate hairs. Mandibles, 
lip, maxilla, and sternum bright yellow, fangs of former darker 
orange. The legs are bright yellow on all joints, with long grey 
spines and upstanding brown bristles on brown roots. There are 
short, fine, white scattered hairs on the femoral joints, short brown 
hairs on the others. 
The cephalothorax is longer than broad, rounded at the sides 
and rear, narrowed in front. It slopes gradually from the sides 
of the thoracic part, but steeply from the cephalic, with a nearly 
perpendicular clypeus three-quarters the length of the eye-space. 
The cephalic part is clearly separated by depressions from the 
thoracic part, and there is a deep longitudinal fovea on the rear 
slope. On the median line are three pairs of bristles with circular 
roots. 
The rear row of eyes is procurved, so that the uppermost points 
of the laterals are on a line with the lowest part of the median. 
They are equidistant, but the median are quite perceptibly larger 
than the laterals, and their distance apart is rather more than 
the diameter of the former. 
The eyes of the second row (the laterals of the front row) are 
the largest and most prominent of any, their diameter being equal 
to that of the rear median and a front row combined. They are 
this distance from the rear laterals. The front row (or front 
median) are two-fifths the diameter of their laterals (2nd row), 
their diameter apart, and the same distance from their laterals. 
The clypeus is the length of the quadrilateral formed by the 
rear median and 2nd row of eyes. 
The mandibles are as long as the cephalothorax is broad in 
front, conical and slightly kneed at the base, with scattered up- 
standing bristles on the front and hair on the inner and outer 
sides. The fangs are broad at the base, but short and weak. 
The margin of the falx-sheath is smooth but with a fringe on the 
outer margin. 
The maxille are long and narrow, rounded anteriorly, and 
parallel at the side, bending forward over the lip, which is twice 
as long as it is wide halfway up, but broadens out at the base ; 
it is rounded anteriorly and more than half the length of the 
maxille, 
